This circuit uses a high brightness LED to simulate a LASER. We found it in a 1991s PE Hobbyst Handbook. The components used are all common.
This circuit was obtained in a technical publication from the 1970s. It fires a diac and thus a...
We found this circuit in the 1994 Linear Applications Handbook from National Semiconductor. The...
This simple measuring bridge allows the capacitance m of some pF to microfarads to be measured...